Posted by **Sue** on Wednesday, May 22, 2013 at 11:01pm.

Can someone explain what to do for the following question.

What percentage of a normal distribution is greater than the mean? Give your answer correct to the nearest percent.

What formula is used? Because I have to find also 1 standard deviation of the mean and what percentage is greater than a value that is 1 standard deviation below the mean? My book does not explain this very good...

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